Quote:
Originally Posted by AstroApprentice
Just wondering if you have played with filter orientation? The general rule is that the reflective side should face the sky, but apparently under certain conditions the opposite may help reduce internal reflections:
https://www.baader-planetarium.com/e...the-telescope/ |
Interesting, thanks for the link. I have a field flattener that sits about 20mm in front of the filters. I was very careful to orientate the filters correctly but I might flip the narrow band ones around and see what happens.